var useTimes = 0;

function setUp () 
{
	document.temps.LA.value = 250000;
	document.temps.AI.value = 1800;
 	document.temps.IR.value = 6.75;
 	document.temps.AT.value = 2000;
 	document.temps.YR.value = 30;
 	document.temps.PI.value = 0;
 	document.temps.MT.value = 0;
 	document.temps.MI.value = 0;
 	document.temps.MP.value = 0;
//document.getElementById('myTotal').innerHTML=total;
}

function floor(number)
{
  return Math.floor(number*Math.pow(10,2))/Math.pow(10,2);
}

function dosum()
{
	
  var mi = document.temps.IR.value / 1200;
  var base = 1;
  var mbase = 1 + mi;
  for (i=0; i<document.temps.YR.value * 12; i++)
  {
    base = base * mbase
  }
  document.temps.PI.value = floor(document.temps.LA.value * mi / ( 1 - (1/base)))
  document.temps.MT.value = floor(document.temps.AT.value / 12)
  document.temps.MI.value = floor(document.temps.AI.value / 12)
  var dasum = document.temps.LA.value * mi / ( 1 - (1/base)) +
        document.temps.AT.value / 12 + 
        document.temps.AI.value / 12;
  document.temps.MP.value = floor(dasum);
    
  	useTimes++;
	
	if (useTimes == 19)
	{
	alert("Check out our other software.");
	}
	
	if (useTimes == 15 || useTimes == 18)
	{
	alert("Visit Shadeland Studios for more software.");
	}
	
	if (useTimes == 12 || useTimes == 14)
	{
	alert("Are you looking for a house right now?");
	}
	
  	if (useTimes > 20)
	{
	alert("Calculating... Find this useful? Try other Shadeland Studios products.");
	}
  
}


function resetApp () 
{
	
	setUp();
	
	useTimes++;
	
  	if (useTimes == 17 || useTimes == 19)
	{
	alert("Check out our other software.");
	}
	
	if (useTimes == 16)
	{
	alert("Visit Shadeland Studios for more software.");
	}
	
	if (useTimes == 12 || useTimes == 13 || useTimes == 15)
	{
	alert("Did you make a mistake? Resetting....");
	}
	
  	if (useTimes > 20)
	{
	alert("Resetting.... Visit Shadeland Studios for more Software.");
	}
  

	
}


function updateOrientation()
            {
                var displayStr = "Orientation : ";
 
                switch(window.orientation)
                {
                    case 0:
                        displayStr += "Portrait";
                    break;
 
                    case -90:
                        displayStr += "Landscape (right, screen turned clockwise)";
						dosum();
                    break;
 
                    case 90:
                        displayStr += "Landscape (left, screen turned counterclockwise)";
						resetApp();
                    break;
 
                    case 180:
                        displayStr += "Portrait (upside-down portrait)";
                    break;
 
                }
                //document.getElementById("output").innerHTML = displayStr;
				
            }